Table of Contents
Introduction
Definition of control system, Open loop and closed loop, Feedback and Feed-Forward control, The design process (with a case study).
Mathematical modeling of a physical system : Differential equations of a physical system, Laplace transforms, and concept of transfer function.
Block diagram algebra, Signal flow graph - Mason's gain formula.
Time Domain Analysis and Design
Standard test inputs, Time response of first order and second order systems, Steady state analysis : Steady state error and error constants, Transient response specifications.
Stability analysis - Routh-Hurwitz criterion. Root Locus technique, Design of compensators using Root Locus.
Frequency Domain Analysis and Design
Correlation between time and frequency response, Frequency domain specifications, Nyquist plots, Bode plots - Gain margin, Phase margin, Design of lead / lag compensators using Bode plots.
State Variable Analysis and Design
Concept of state, State variables and state model, State models for continuous time systems (SISO, MIMO) - Derivation of transfer function from state models and vice versa, Solution of state equations - State transition matrix, Controllability and observability, State feedback controller using pole placement, Observers.
Controllers
PID controllers : Basic algorithm, Structures, Practical modifications - ISA PID control law, Discrete implementation.
Programmable Logic Controller (PLC) - Concept, Architecture, Programming and interfacing, Application case studies.
Advances in Control
Digital control, SCADA, Distributed control system, Adaptive control - Gain scheduling, MRAS and self tuning, Feedback linearization control, Predictive control, Optimal control, Robust control. Application case studies in motion control, Process control, Automotive control, Aircraft and missile guidance and control.
